Swivel pipe joint



y 1- 2553s Apn119,19z7. GVGRONNER ,s

swlvEL PI'PE JOINT Filed May 24, 1924 l @ivm/1111111111 George Gram-Le? u ano: um#

latented Apr; 1.9, 1927i f UNITED STAT-Es Y GEORGE eno/unna, oE-DAYENEORT, IOWA.

SWIVEL PIPE JOINT.

' Application filed May '24, x1924. serial N o. 715,711.'

(GRANTED UNDER THE acm or y i f The invention described herein unay be i used by the Government, or -any of its officers or employees in prosecution of Work for the Government, or by any other'person-in the United Statics, without payment tonie-of any royalty thereon, in accordance-With the.

' act of March 3, 1883. A

The subjectof -this 'invention is Ja swivel pipejoint,l 1U.

, .as a' lathe to a-revolving part, which may revolve with the spindle or released tool without destruction of the piping, escape oi:l the cooling or lubricating fluid, or diminution of lpressure. I, also, provide means located4 Within or Without the assembly for preserving the tightness of the joint when theliuid I pressure is relieved. y H

To these and .other/ends, my' invention consists in theconstruction, arrangement, v and combination of elements described here-- inafter and ointed out in the claimforming a part of'this specification. A practical embodiment of my invention is illustrated in the accompanying drawing, in which, l j Fig. 1 is a 4.0y mylmproved vswivel joint, showing the springwithin the assembly;

Fig. 2 is a similarv1eW, showing the springexterior to the assembly; and Fig. 3 is a sectional view taken on the `1ine 3-3 of Fig-.1.

.Referring to the drawings -by numerals of reference: l

10 indicates a fluid conducting member,

.specifically al rotatable tubular member,l

which `is cunterbored and tapped at one end forattachment to the revolving spindle' of a lathe When' the Work to be cut is held stationary, o1; it may be attached to the cuts ting or drilling tool when lthe work is In machines for .drilling or ,reaming ag cooling or lubricating flue 1s .conductedun-.f

longitudinal sectional view of.

mounted on the revolving spindle. The tubular member is reciprocally and rotatably mounted in a-'bearing 11, but is-normally heldagiainst reciprocation by meansor` a spring 12 embracing a reduced terminus 13i of the tubular memberfand seated on the" ce tubular member and a colla-r. 14' threadedly mounted on the tubular member and secure against rotationby a set screw 15.-

The bearing 1 ,1s in threaded engagement with one end of a fluid receiving member, specificallyV a tapped T-tting 16, theopposite end of which fitting is closed by la'plug l 17 which' is recessed to form a seat and guide for the spring 12. `The portion of the tubular member carrying the collar 14 is dis- ^70` posed within the T -tting 16, the collar preventing Withdrawal of the sleeve, and both members beingspacedom the Walls of the l T-litting to form a liquid receiving chamber 18. A packing ring 19, specilicallya leatherv Washer,` embraces the 'tubular member 10 and is interposed'between the collar z 14 and thebearing 11, where it is held under compression oilthe spring 12. i

The T-fitting'l is provided with a boss 20 tapped for attachment to a stationary part of a machine (not shown) containing a liq- -uid supply under pressure.'

. In the modified form shown in Fig. 2 the spring y12 embraces the tubular member 10 exterior to the assembly and is confined betweenl a, shoulder 21 formed on the tubular member and thebearing l1.

The cooling or lubricating fluid enters the chamberA 18throu'gh the boss 20 and passe-s\9 'through the tubular member 10 to the cut- A I ting or drilling tool., The pressure of the fluid exerted against tli'e tubular member 10 and collar ,14 ywill normally maintain a tight joint with the. bearing 11, but when the fluid pressure is diminished or entirely cut offl the spring 12 will prevent inward movement of the tubular' member and main# tain the closure. ,The tubular member 10,`

which is fixed to the revolving spindleor the tool, is free to rotate 'with such element Without permitting the escape of the fluid and theconsequent loss in the pressure.

While in the foregoing there has been It is nevertheless desired to emphasize the 'illustrated and described such combination 105 fact that interpretation of the invention should only be conclusive when made in the light of the subjoined claim.

I claim:

5 A swivel ipe joint embodying a- T-fitting, :L plug for c osing one end thereof, said plug formed with a iecesska bearing engaged in the opposite end of the itting, a tubular member partially inserted' within the T-:t-i

I0 ting, said tubular member formed with a reduced terminus spaced from the ttin a collar caried bythe tubular member a jacent the terminus and spaced from the fitting7 a, kset screw uniting the collar and the` Ytubulai' member, a packing ring interposed GEORGE GRONNER. 

